* cpplib.c (macroexpand): If arg->raw_before or

        arg->raw_after, remove any no-reexpansion escape at the
        beginning of the pasted token.  Correct handling of whitespace
        markers and no-reexpand markers at the end if arg->raw_after.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@22695 138bc75d-0d04-0410-961f-82ee72b054a4